Post-heat-treatable substrate with thermochromic film

Abstract

A post-heat-treatable substrate with a thermochromic film. The post-heat-treatable substrate includes a base substrate, a thermochromic film coating the base substrate, an auxiliary film formed on at least one of the upper surface and the lower surface of the thermochromic film, and a sacrificial film formed between the thermochromic film and the auxiliary film. The sacrificial film is made of metal. Accordingly, the thermochromic material is prevented from agglomerating during post-heat-treatment of the substrate. The auxiliary film prevents oxygen and nitrogen from diffusing into the thermochromic film, so that high-temperature heat treatment, such as a process for tempering the substrate, a process for heat-strengthening the substrate and a process for forming the substrate to become curved, can be conducted on the substrate.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]The present application claims priority from Korean Patent Application Number 10-2011-0035790 filed on Apr. 18, 2011, the entire contents of which application are incorporated herein for all purposes by this reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a post-heat-treatable substrate with a thermochromic film, and more particularly, to a post-heat-treatable substrate with a thermochromic film, and has a sacrificial film on at least one of an upper layer and a lower layer of the thermochromic film.[0004]2. Description of Related Art[0005]In response to soaring prices of chemical energy sources such as petroleum, the necessity for the development of new energy sources is increasing. In addition, the importance of energy saving technologies is increasing just as much as the necessity for new energy sources. In fact, at least 60% of energy consumption in common houses is attributed ...

AI Technical Summary

Benefits of technology

The sacrificial metal film ensures the thermochromic material's integrity during post-heat treatment, reducing defects and maintaining optical quality, as evident from reduced roughness and defect occurrence in the treated substrates, enhancing energy-saving capabilities.

Problems solved by technology

In particular, common houses and buildings lose up to 24% of their energy through windows.

However, this window has the following drawbacks due to its characteristic of reflecting wavelengths other than visible light.

Specifically, it does not admit the IR range of sunlight into the interior of a room, which is a drawback especially in winter, and the transmittance of sunlight is not adjusted according to the season (temperature).

Considering the characteristics of the coated glass, its characteristics frequently deteriorate when it is subjected to post-heat treatment at a temperature of about 700° C. The thermochromic coating also has problems in that it has quality defects, such as discoloration, pinholes, hazing, splitting, and image distortion, as the result of post-heat treatment.

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